Aletsch Glacier
Wallis
The Aletsch Glacier, located in the Swiss canton of Valais, is the largest glacier in the Alps, measuring approximately 23 kilometers in length and covering an area of about 81.7 square kilometers. It is composed of four main tributary glaciers converging at the vast ice plateau known as Konkordiaplatz. This glacier system lies in the eastern Bernese Alps, bordered by prominent peaks such as the Jungfrau, Mönch, and Aletschhorn. The glacier's ice thickness reaches up to 905 meters at Konkordiaplatz, and its meltwater feeds into the Massa river, eventually joining the Rhône valley. The region is part of the Jungfrau-Aletsch Protected Area, recognized as a UNESCO World Heritage Site since 2001. Like many glaciers worldwide, the Aletsch Glacier is retreating, having lost significant length and thickness since the 19th century due to climate change. Its unique geography and size make it a remarkable natural feature and an important symbol of alpine glaciology.
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Astuce: The best time to visit the Aletsch Glacier is during the summer months when access routes and hiking trails are more accessible. Visitors are advised to check weather conditions and trail statuses before planning their trip. Guided tours and mountain huts such as the Konkordia Hut offer opportunities to explore the glacier safely. Purchasing tickets or booking guided excursions in advance is recommended, especially during peak tourist seasons. Discounts may be available for groups, seniors, or youth. Proper equipment and clothing are essential due to the alpine environment and variable weather.
Faits intéressants
- •The Aletsch Glacier is the longest glacier in the Alps, measuring about 23 km in length.
- •Its ice thickness reaches up to 905 meters at Konkordiaplatz, making it one of the thickest glaciers in the region.
- •The glacier is formed by the convergence of four smaller glaciers at the Konkordiaplatz ice field.
- •The glacier's meltwater forms the Massa river, which flows into the Rhône valley.
- •The entire glacier and surrounding area are part of the Jungfrau-Aletsch Protected Area, a UNESCO World Heritage Site since 2001.
- •Since 1980, the glacier has retreated approximately 1.3 kilometers due to climate change.
Histoire
The Aletsch Glacier has been known and named since at least the 13th century, with the name 'Aletsch' first recorded in 1231.
It formed over millennia through the accumulation and compaction of snow in the Bernese Alps.
Historically, it was connected with neighboring glaciers such as the Ober- and Mittelaletschgletscher, contributing to a larger glaciated area.
Over time, the glacier has undergone significant retreat, particularly since the 19th century, losing several kilometers in length and hundreds of meters in thickness.
Its evolution reflects broader climatic changes affecting alpine glaciers.
Guide du lieu
Konkordiaplatz
A vast 6 square kilometer ice plateau where four major tributary glaciers converge to form the Aletsch Glacier. It is notable for its immense ice thickness and serves as a key landmark for glacier studies.
Grosser Aletschfirn
The western tributary glacier flowing along the northern foot of the Aletschhorn and Dreieckhorn. It is fed by three significant firns starting around 3,800 meters elevation.
Jungfraufirn
The northwestern tributary glacier, the shortest of the four, originating from the southern flank of the Mönch and the eastern flank of the Jungfrau, near the Jungfraujoch.
Ewigschneefäld (Eternal Snow Field)
The northern tributary glacier flowing from the east flank of the Mönch, curving between several peaks before joining at Konkordiaplatz.
Grüneggfirn
The smallest eastern tributary glacier entering Konkordiaplatz, located below the Grünegghorn and connected to the Fieschergletscher via the Grünhornlücke pass.